<!DOCTYPE html>
<html>

<head>
    <meta charset="utf-8" />
    <title>别踩白块</title>
    <link rel="stylesheet" href="css/index.css" />
</head>

<body>
    <h2>score</h2>
    <h2 id="score">0</h2>
    <div id="main">
        <div id="con"></div>
    </div>
    <div class="btn">
        <button class="start" onclick="start()">
         开始游戏
       </button>
    </div>
</body>
<script src="js/index.js"></script>


</html>